Hi everyone, im looking at purchasing a dating script but have a few questions

1) How much storage space and bandwidth allowance is roughly required to run
such a
site?
Lets assume the website is fairly popular with about 2000 members.

2) I love features of dateopia more than any other script but i like the
template
layout the least. It doesn't have the smooth warm feel of many of the others.
i.e.
www.lavalife.com www.eflame.com www.eharmony.com www.match.com etc etc. Can this
script be customized to look and feel like this? If so, how does one with little
or
no design knowledge go about it?

3) How does the instant messenger feature work? I like lavalife's system where
its a
little box at the top of the screen that is always visable, as opposed to a
seperate
window that pops up like many other dating scripts.

Cheers, and thank you for your time and help :)
Adrian